2.5=30/d

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Solution for 2.5=30/d equation: 



2.5=30/d

We move all terms to the left:

2.5-(30/d)=0



Domain of the equation: d)!=0

d!=0/1

d!=0

d∈R



We add all the numbers together, and all the variables

-(+30/d)+2.5=0

We get rid of parentheses

-30/d+2.5=0

We multiply all the terms by the denominator


(2.5)*d-30=0

We multiply parentheses

2.5d-30=0

We move all terms containing d to the left, all other terms to the right

2.5d=30

d=30/2.5

d=12

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